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Updated: May 24, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
Locking phenomenon of polarization flipping in He-Ne laser with a phase anisotropy feedback cavity
Wenxue Chen1, Shulian Zhang, Xingwu Long
1Department of Optoelectronic Engineering, College of Opto-Electronic Science and Engineering, National University of Defense Technology, Hunan 410073, China.
Abstract:
In this article, the locking phenomenon of polarization flipping is reported. A model that integrates the model of the equivalent cavity of a Fabry-Perot interferometer and Lamb's semiclassical theory is built to explain the locking phenomenon. On the basis of analysis of the model, a method is proposed to release the locking of polarization flipping. After solving the problem of lock-in, the system in this paper can be used to measure small stress of the optical component and phase retardation of the birefringence component.

